EP3283671A1 - Method for coating a component and use of said method - Google Patents
Method for coating a component and use of said methodInfo
- Publication number
- EP3283671A1 EP3283671A1 EP16712213.4A EP16712213A EP3283671A1 EP 3283671 A1 EP3283671 A1 EP 3283671A1 EP 16712213 A EP16712213 A EP 16712213A EP 3283671 A1 EP3283671 A1 EP 3283671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- component
- press
- small
- transformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 91
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000009466 transformation Effects 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 229910052738 indium Inorganic materials 0.000 claims description 19
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 229910000846 In alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
- H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Definitions
- the invention relates to a method for coating a component and the use of such a method.
- the aim of structural transformation in particular in the form of a reflow process, is to produce a coating or layer with solidification structure from the melt, ie the molten coating, which is low in internal stresses and has an intermetallic phase which has grown at an accelerated rate.
- a reflow process with the aid of hot air blowers from the company "HAPRO Industrieaus GmbH Solingen", Solingen, is known from practice.
- German Offenlegungsschrift DE 10 2010 042 526 A1 discloses a contact element made of a base material having at least one conductive layer made of indium or indium with an admixture or alloy of at least one of the elements of the group of elements comprising copper, silver, Gold, bismuth, nickel, antimony, palladium, iron, carbon and phosphorus.
- the "press-fit technology" known from practice in the automotive industry is a very reliable technique for electrically connecting or contacting electrical components, in particular connectors and circuit boards.
- a transition from lead-containing materials to pure tin materials has been carried out in the past.
- a significant problem with pure tin materials is whisker formation, ie the formation of tin chips, which can cause short circuits in the electrical system.
- Indium as a soldering aid has long been known in practice. It is known to apply indium in any form, but usually by electroplating, on a component. Subsequently, the indium coating is raised above its melting temperature of e.g. 150 degrees Celsius remelted. Thus, a microstructure transformation or a reflow in the indium coating is achieved.
- the object of the invention is to provide an improved method for coating a component and to provide an improved use of the method.
- the method is used to coat a component, wherein the component is in particular an electrical contact element.
- a coating is applied to the component. After application, the coating has a first material structure. Subsequently, an area of the coating is selected as the conversion area. In this conversion region, a microstructure transformation is performed on the coating.
- the conversion region here comprises at least a portion of the coating or the entire coating.
- the coating in the conversion region on a second material structure In the possibly remaining area of the coating, this further has the first material structure.
- the conversion area is divided into small areas.
- the microstructure transformation takes place only in one of the small areas and within a respective short-term span. Outside the respective small area no structural transformation takes place within the short-term span.
- the dimensioning of the small area and the short-term span is dependent on each other such that outside the small area, the previous material structure of the coating is maintained within the short-term span.
- the structural transformation in the small area is thus independent of the remaining coating, that is, the structural transformation there does not affect the rest of the coating.
- the small area can also be an incoherent area, that is, the structure transformation can take place simultaneously at several locations or areas during the short-term span. In their respective environment, however, no conversion of the coating takes place during the short-term span.
- microstructure transformation is completed in one of the small areas, it will be completed during a subsequent, i.e. later short-term span performed in another of the small areas. This is repeated until all small areas and thus the entire conversion area have been completed.
- Small areas can also be edited multiple times within the same or different short periods.
- the short-term spans can be selected differently or equally long.
- the small areas can be chosen differently or equally large.
- the melting temperature of the coating is exceeded.
- the melting temperature is only exceeded locally in the small area and only briefly during the short-term span for structural transformation, so that this is sufficient in the small area just for structural transformation.
- the remaining material, so the remaining coating outside the small area and the rest of the component itself are only slightly thermally stressed during the short-term.
- the process provides a locally and temporally selective reflow process so that reflow within the small areas can be carried out independently of the residual coating in a plant process.
- Residual material that is, the remaining coating, outside the respective small area and outside of the conversion area, as well as the component or to be coated base member itself, are only slightly thermally stressed, which is advantageous in terms of mechanical properties of the remaining coating and the base member, there are no changes to be expected here.
- components When providing accurate mechanical guidance, components may be processed statically or in a continuous manner as described.
- a connector with a press-fit zone is used as a component. At least one of the small areas is then selected so that it corresponds to the press-in zone or corresponds to a part of the press-in zone.
- the component is therefore in particular an element or contact element of a connection device in press-fit technology.
- the press-in zone comprises in particular one or more punched edges of the component.
- the press-in zones are or are located, for example, on pins.
- At least one of the small areas is selected so that it corresponds to an edge area or a part of the edge area.
- the at least one small area is selected such that it corresponds to both the press-in zone or a part of the press-in zone as well as an edge area or a part of the edge area.
- the coating is applied to the component by a plating process.
- the coating material has the first material structure, which is to be converted into a second material structure by structural transformation, generally only in regions, namely in the conversion region.
- the method according to the invention is particularly well suited because it can carry out the structural transformation locally in one operation, without converting the remaining coating outside the conversion range.
- the microstructure transformation is carried out by a heat source, which enters only locally limited heat on the component.
- the local limit refers to the small area or part of the small area.
- a laser arrangement is used as the heat source.
- the laser arrangement has a pulsed infrared laser.
- the laser operates to have an angle of incidence between 5 degrees and 90 degrees on the small area.
- a laser arrangement or a laser beam is particularly suitable for punctual or localized introduction of heat and for the brief introduction of heat and is therefore particularly well suited for the process.
- the laser beam can be dimensioned with such a small diameter that it covers at most the small area or only part of the small area and still ensures sufficient heat input.
- the angle at which the laser beam strikes the surface can vary between 5 degrees and 90 degrees, depending on the application.
- a laser source with a deflection scanner is used as laser arrangement.
- the deflection scanner sweeps the small area at least once, especially several times during the short-term span.
- the impact location of the laser or the beam cross-section is in particular smaller, in particular substantially smaller, in particular orders of magnitude smaller than the small area and is guided over the small area by means of the deflection scanner so that it is successively swept one after the other within the short-term span at least once by the laser beam.
- the energy input into a coating takes place so rapidly and so precisely that the area in which - for the purpose of microstructural transformation - the melting temperature of the coating is exceeded can be limited very precisely, especially on stamped parts.
- the coating used is an indium or indium-containing coating.
- indium alloys are used as a coating.
- Indium alloys are particularly suitable as a coating for the press-fit technique or for such components, since indium-containing coatings hardly tend to whisker formation.
- these coatings can advantageously be microstructured as explained above, as a result of which whisker formation is reduced.
- the object of the invention is achieved by a use of the method described above for a component of a connecting device in the press-fitting.
- the coating is carried out in particular by electroplating and subsequent structural transformation.
- the method is used for structural transformation by reflow at a conversion region, wherein the transformation region is a coating of a coating of a press-fit zone of a connector.
- the use of the method according to the invention results in a high-quality structural transformation as described above.
- the method is used for a microstructure conversion of an indium or indium-containing layer as a coating in the press-fit technology for connectors in the automotive sector.
- high-quality connectors are required, in particular in the press-fit technique, which have as a coating a microstructured converted indium (containing) layer.
- Fig. 2 shows an alternative component with alternative coating and laser arrangement.
- a coating 4 is first galvanically applied by means of a galvanization process, which has a first material structure M1 after application.
- the coating 4 is an indium coating, alternatively an indium-containing coating.
- the coating 4 is a coating 4 in the press-fit technology for connectors in the automotive sector.
- a microstructure transformation is then carried out on the coating 4. The structure ge conversion takes place in the form of a reflow at the conversion area 6a.
- the coating 4 has a second material structure M2 in the conversion region 6a.
- the remaining area 6b of the coating 4 remains untreated, that is, retains its first material structure M1.
- the conversion region 6a is divided into parts, namely small regions 8a-h.
- the structural transformation takes place at one time only in one of the small areas 8a-h.
- the texture transformation takes place in a respective short-term span Ta-h.
- Ta Within one of the short periods Ta - h, only one of the small areas 8a-h is converted.
- no structural transformation takes place at this short-term span.
- the small area 8a is converted.
- the short-term span Tb different therefrom, the small area 8b is converted and so on.
- the component 2 as a connector has a press-in zone 10, which serves to be electrically contacted by Einpresstechnik with a counterpart, not shown.
- the small areas 8a-h are chosen so that these parts correspond to the press-fit zone 10.
- the conversion region 6a is a coating in the region of the press-in zone 10 of the connector.
- the component 2 also has an edge 12. In the region of the edge 12, an edge region 14 extends.
- the small regions 8c and 8d are selected so that they each correspond to a part of the edge region 14. During the conversion of the regions 8c and 8d, therefore, only microstructures in the edge region 14 are converted.
- FIG. 2 shows a heat source 16 and schematically again shows alternative small areas 8a-i of an alternative coating 4 on an alternative component 2, which is likewise only indicated here.
- the heat source 16 serves to introduce heat into one of the small areas 8a-h at a time or during one of the short-time periods Ta-i.
- the heat input is locally limited to one of the small areas 8a - i.
- heat input during the short-term period Ta heats only the small area 8a, so that only there takes place a structural transformation.
- the remaining small areas 8b-i are not significantly heated so that no structural transformation takes place in them.
- the heat source 16 is a laser arrangement 18, in particular with a pulsed infrared laser.
- An angle of incidence ⁇ of the laser beam 24 generated by the laser arrangement 18 on the coating 4 in the example is 80 degrees and describes the angle which the laser beam 24 encloses with the tangential plane to the coating 4 at the point of impact.
- the laser arrangement 18 comprises a laser source 20, which generates an always rectified laser beam 24.
- a deflection scanner 22 The laser assembly 18 then deflects the laser beam 24 accordingly to one of the small areas 8a-i and also within the small areas 8a-i. This is indicated in FIG. 2 by a dashed curve of the location of incidence of the laser beam 24 on the coating 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015004651.9A DE102015004651B4 (en) | 2015-04-15 | 2015-04-15 | Method for coating a component and use of the method |
PCT/EP2016/000496 WO2016165809A1 (en) | 2015-04-15 | 2016-03-22 | Method for coating a component and use of said method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3283671A1 true EP3283671A1 (en) | 2018-02-21 |
EP3283671B1 EP3283671B1 (en) | 2020-05-06 |
Family
ID=55640669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16712213.4A Active EP3283671B1 (en) | 2015-04-15 | 2016-03-22 | Method for coating a component and use of said method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3283671B1 (en) |
DE (1) | DE102015004651B4 (en) |
WO (1) | WO2016165809A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4878735B2 (en) * | 2004-01-22 | 2012-02-15 | 住友電気工業株式会社 | Flat cable |
EP1788585B1 (en) | 2004-09-10 | 2015-02-18 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Conductive material for connecting part and method for fabricating the conductive material |
JP5229785B2 (en) * | 2007-12-28 | 2013-07-03 | 日本圧着端子製造株式会社 | Plating layer and method for forming the same |
CN101978562B (en) * | 2008-03-19 | 2013-04-03 | 古河电气工业株式会社 | Metallic material for connector and process for producing the metallic material for connector |
EP2273621A4 (en) * | 2008-03-19 | 2011-07-13 | Furukawa Electric Co Ltd | Terminal for connector and process for producing the terminal for connector |
JP5079605B2 (en) * | 2008-06-30 | 2012-11-21 | 株式会社オートネットワーク技術研究所 | Crimp terminal, electric wire with terminal, and manufacturing method thereof |
DE102010042526A1 (en) | 2010-10-15 | 2012-04-19 | Continental Automotive Gmbh | contact element |
DE102011000984A1 (en) | 2011-03-01 | 2012-09-06 | Rasselstein Gmbh | Process for refining a metallic coating on a steel strip |
DE102012102230B4 (en) * | 2012-03-16 | 2014-07-17 | Thyssenkrupp Rasselstein Gmbh | Process for refining a metallic coating on a steel sheet, coated steel sheet, and method of manufacturing cans of coated sheet steel |
-
2015
- 2015-04-15 DE DE102015004651.9A patent/DE102015004651B4/en active Active
-
2016
- 2016-03-22 WO PCT/EP2016/000496 patent/WO2016165809A1/en active Application Filing
- 2016-03-22 EP EP16712213.4A patent/EP3283671B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102015004651B4 (en) | 2018-09-27 |
WO2016165809A1 (en) | 2016-10-20 |
DE102015004651A1 (en) | 2016-10-20 |
EP3283671B1 (en) | 2020-05-06 |
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